Refactor ContentView.path and related code

Reduce the amount of duplicate code used to implement method `ContentView.path`.
Make the relevant tests easier to read, and alphabetically sort the relevant
test's data.
Manifests-api: Added few tests related to manifests

Added the below tests:
* test_positive_create_1
* test_positive_delete_1
* test_negative_create_1

Manifests-API tests: Fixed the variable names.
Merge pull request #1367 from kbidarkar/manifest-api

Manifests-api: Added few tests related to manifests
Merge pull request #1368 from Ichimonji10/content-view-path

Refactor ContentView.path and related code